Saoirse Ronan had jaws dropping left and right when she walked down the red carpet at the Oscars on Sunday night in a sexy, glittering green gown. The Brooklyn actress, who scored a best actress nomination for her incredible role as an Irish immigrant in 1950s NYC, not only looked insanely good in her Calvin Klein dress, but had a very good reason for choosing its color. Saoirse reportedly told E! that she "wanted to wear emerald green to represent Ireland on the red carpet." So cute! Keep reading to see more photos of her night at the award show, and check out how she reacted to hearing she'd been nominated!